Question about 2000 Volkswagen Beetle

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The temperture warning light comes on when driving and goes off after a while . plenty coolant in engine

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It might not be related to the temperature but it can be due to failure of the thermister ( the temperature sensor) that is causing this erratic action.
So locate the sensor which is normally mounted on the area of the water pump .
Also check if there is any decolouration of the coolant if so flush and refill.

Posted on Sep 17, 2010

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